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How to find that image has distortion?

I performed camera calibration on image. I want to know that how to decide that there is distortion in image?

For example look at attached image. how can we say that image has distortion. Any idea?

By visualization, we can say that image is too much distorted or calibration is not performed well. but how can we say with some computation method or some statistics?

C:\fakepath\im_outb245.pngPlease help me to figure out. thanks

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updated 2017-11-07 01:21:28 -0600

berak gravatar image

How to find that image has distortion?

I performed camera calibration on image. I want to know that how to decide that there is distortion in image?

For example look at attached image. how can we say that image has distortion. Any idea?

By visualization, we can say that image is too much distorted or calibration is not performed well. but how can we say with some computation method or some statistics?

C:\fakepath\im_outb245.pngC:\fakepath\im_outb245.pngPlease help me to figure out. thanks thanks